PMID- 15521331 OWN - NLM STAT- MEDLINE DCOM- 20050202 LR - 20190922 IS - 0363-9045 (Print) IS - 0363-9045 (Linking) VI - 30 IP - 8 DP - 2004 Sep TI - Comparison of the TSI Model 3306 Impactor Inlet with the Andersen Cascade Impactor: solution metered dose inhalers. PG - 859-68 AB - The product performance of a series of solution Metered Dose Inhalers (MDIs) were evaluated using the TSI Model 3306 Impactor Inlet and the Andersen Cascade Impactor (ACI). The goal of the study was to test whether the fine particle and coarse particle depositions obtained using the Model 3306 were comparable to those results obtained by ACI testing. The analysis using the Model 3306 was performed as supplied by the manufacturer as well as with 20 cm and 40 cm vertical extensions that were inserted between the Model 3306 and the USP Inlet. Nine different solution formulations were evaluated. The drug concentrations ranged from 0.08 to 0.8% w/w and the ethanol cosolvent concentration varied between 5 and 20% w/w. In general, it was found that good correlations between the two instruments were obtained. However, for formulations containing 10-20% w/w ethanol it is shown that an extension fitted to the Model 3306 yielded an improved correlation to those obtained from the ACI. FAU - Myrdal, Paul B AU - Myrdal PB AD - College of Pharmacy, University of Arizona, Tucson, Arizona, USA. myrdal@pharmacy.arizona.edu FAU - Stein, Stephen W AU - Stein SW FAU - Mogalian, Erik AU - Mogalian E FAU - Hoye, William AU - Hoye W FAU - Gupta, Abhishek AU - Gupta A LA - eng PT - Comparative Study PT - Journal Article PL - England TA - Drug Dev Ind Pharm JT - Drug development and industrial pharmacy JID - 7802620 RN - 0 (Pharmaceutical Solutions) RN - KGZ1SLC28Z (Beclomethasone) SB - IM MH - Beclomethasone/chemistry/pharmacokinetics MH - Drug Delivery Systems/instrumentation/methods MH - Equipment Design/*methods/*standards MH - *Metered Dose Inhalers MH - Particle Size MH - Pharmaceutical Solutions/*chemistry MH - Technology, Pharmaceutical/methods EDAT- 2004/11/04 09:00 MHDA- 2005/02/03 09:00 CRDT- 2004/11/04 09:00 PHST- 2004/11/04 09:00 [pubmed] PHST- 2005/02/03 09:00 [medline] PHST- 2004/11/04 09:00 [entrez] AID - 10.1081/ddc-200034575 [doi] PST - ppublish SO - Drug Dev Ind Pharm. 2004 Sep;30(8):859-68. doi: 10.1081/ddc-200034575.